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Re: [Qemu-devel] [PATCH RFC 0/3] qdev: order devices by priority before
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From: |
Michael S. Tsirkin |
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Subject: |
Re: [Qemu-devel] [PATCH RFC 0/3] qdev: order devices by priority before creating them |
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Date: |
Wed, 11 May 2016 16:55:28 +0300 |
On Tue, May 10, 2016 at 07:13:29PM +0200, Paolo Bonzini wrote:
>
>
> On 10/05/2016 17:36, Michael S. Tsirkin wrote:
> >> > Can you explain why requiring the user to specify -device in a sane
> >> > order isn't good enough?
> > Because it requires knowledge about the hardware.
> > For example, how do users know that iommu must come before the devices?
> > They don't.
>
> Could they "know" it by adding an iommu=foo argument to e.g. the PCI
> bridge, pointing to the IOMMU device?
>
> Paolo
People don't create the pci host bridge though, it's
part of the default machine.
--
MST